/
layer_raster.cpp
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/
layer_raster.cpp
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// Andrew Naplavkov
#include <algorithm>
#include <brig/boost/envelope.hpp>
#include <brig/boost/geom_from_wkb.hpp>
#include <brig/boost/geometry.hpp>
#include <cmath>
#include <QImage>
#include <vector>
#include "layer_raster.h"
#include "transformer.h"
#include "utilities.h"
layer_raster::layer_raster(provider_ptr pvd, const brig::pyramid_def& raster)
: layer(pvd), m_raster(raster)
{}
layer_raster::layer_raster(provider_ptr pvd, const brig::pyramid_def& raster, const std::vector<brig::table_def>& tbls)
: layer(pvd), m_raster(raster), m_tbls(tbls)
{}
brig::table_def layer_raster::get_table_def(size_t lvl)
{
auto tbl
( m_tbls.empty()
? get_provider()->get_table_def(m_raster.levels[lvl].geometry)
: m_tbls[lvl]
);
if (!m_raster.levels[lvl].raster.query_expression.empty())
tbl.columns.push_back(m_raster.levels[lvl].raster);
for (const auto& cnd: m_raster.levels[lvl].query_conditions)
{
auto col(tbl[cnd.name]);
if (!cnd.query_expression.empty()) col->query_expression = cnd.query_expression;
col->query_value = cnd.query_value;
}
return tbl;
}
void layer_raster::reset_table_defs()
{
if (m_tbls.empty())
return;
for (size_t lvl(0); lvl < m_raster.levels.size(); ++lvl)
get_provider()->reset_table_def(m_raster.levels[lvl].geometry);
}
layer* layer_raster::fit(provider_ptr pvd)
{
auto raster(pvd->fit_to_reg(m_raster));
std::vector<brig::table_def> tbls;
for (size_t lvl(0); lvl < get_levels(); ++lvl)
{
auto tbl(get_table_def(lvl));
tbl.id.name = raster.levels[lvl].geometry.name;
tbls.push_back(pvd->fit_to_create(tbl));
}
return new layer_raster(pvd, raster, tbls);
}
void layer_raster::reg()
{
get_provider()->reg(m_raster);
}
void layer_raster::reg(std::vector<std::string>& sql)
{
get_provider()->reg(m_raster, sql);
}
void layer_raster::unreg()
{
get_provider()->unreg(m_raster);
}
size_t layer_raster::get_level(const frame& fr)
{
const projection pj_rast(get_pj());
const projection pj_fr(fr.get_pj());
const double scale(pj_rast == pj_fr? fr.scale(): fr.transform(pj_rast).scale());
return m_raster.snap_to_level(scale * scale);
}
std::string layer_raster::get_raster_column(size_t level) const
{
return m_raster.levels[level].raster.name;
}
bool layer_raster::has_spatial_index(const frame& fr)
{
size_t level(get_level(fr));
auto tbl(get_table_def(level));
return tbl.rtree(m_raster.levels[level].geometry.qualifier) != 0;
}
std::shared_ptr<brig::rowset> layer_raster::attributes(const frame& fr)
{
size_t level(get_level(fr));
auto tbl(get_table_def(level));
for (size_t i(0); i < tbl.columns.size(); ++i)
if (tbl.columns[i].name == m_raster.levels[level].geometry.qualifier)
tbl.columns[i].query_value = prepare_box(fr);
tbl.query_rows = int(brig::PageSize);
return get_provider()->select(tbl);
}
std::shared_ptr<brig::rowset> layer_raster::drawing(const frame& fr)
{
size_t level(get_level(fr));
auto tbl(get_table_def(level));
for (size_t i(0); i < tbl.columns.size(); ++i)
if (tbl.columns[i].name == m_raster.levels[level].geometry.qualifier)
tbl.columns[i].query_value = prepare_box(fr);
tbl.query_columns.push_back(m_raster.levels[level].geometry.qualifier);
tbl.query_columns.push_back(get_raster_column(level));
return get_provider()->select(tbl);
}
void layer_raster::draw(const std::vector<brig::variant>& row, const frame& fr, QPainter& painter)
{
if (row.size() < 2|| row[0].type() != typeid(brig::blob_t)) return;
const brig::blob_t& g(boost::get<brig::blob_t>(row[0]));
const QRectF rect_rast(box_to_rect(brig::boost::envelope(brig::boost::geom_from_wkb(g)))); // todo: rotated raster
QImage img_rast;
if (row[1].type() != typeid(brig::blob_t)) return;
const brig::blob_t& r(boost::get<brig::blob_t>(row[1]));
if (!img_rast.loadFromData(r.data(), uint(r.size()))) return;
projection pj_rast(get_pj());
projection pj_fr(fr.get_pj());
if (pj_rast == pj_fr)
painter.drawImage(fr.proj_to_pixel(rect_rast).toAlignedRect(), img_rast);
else
{
const QRectF rect_fr(transformer(pj_rast, pj_fr).transform(rect_rast));
const QRect rect_fr_px(fr.proj_to_pixel(fr.prepare_rect().intersected(rect_fr)).toAlignedRect());
if (!rect_fr_px.isValid()) return;
QImage img_fr(rect_fr_px.size(), QImage::Format_ARGB32_Premultiplied);
transformer tr(pj_fr, pj_rast);
for (int j(0); j < img_fr.height(); ++j)
for (int i(0); i < img_fr.width(); ++i)
{
const QPointF point_fr(static_cast<brig::qt::frame>(fr).pixel_to_proj(rect_fr_px.topLeft() + QPoint(i, j)));
const QPointF point_rast(tr.transform(point_fr));
if (rect_rast.contains(point_rast))
{
const double dx((point_rast.x() - rect_rast.left()) / rect_rast.width());
const double dy((point_rast.y() - rect_rast.top()) / rect_rast.height());
auto pixel(img_rast.pixel(int(dx * img_rast.width()), int((1 - dy) * img_rast.height())));
img_fr.setPixel(i, j, pixel);
}
else
img_fr.setPixel(i, j, QColor(0, 0, 0, 0).rgba());
}
painter.drawImage(rect_fr_px, img_fr);
}
}
double layer_raster::native_scale(const frame& fr)
{
return m_raster.levels[get_level(fr)].resolution_x;
}